منابع مشابه
Isotope Production with Cyclotrons
In the last two decades cyclotron produced isotopes have gained increasing importance in nuclear medicine diagnosis. The lecture will cover aspects on target technology with regard to production efficency, quality, reliability and automation. The production methods for the most commonly used radionuclides will be described. An example for two routine production systems based on gas target techn...
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A great variety of injection processes exist depending on the type of cyclotron considered. Designing the central region where the injection is achieved requires careful studies which are briefly presented. Among the possibilities for external injection in compact machines, the axial method which is frequently used is discussed in more detail.
متن کاملHigh-energy Cyclotrons without Spiral
This paper explores the possibility of reaching high energies in isochronous ring cyclotrons with radial sectors by using negative valley fields to increase the magnetic flutter. A simple model was used to generate field maps for 4-GeV and 13-GeV proton rings, whose orbit properties were then studied using the CYCLOPS equilibrium orbit code. Field maps were also generated for two FFAG designs (...
متن کاملCyclotrons in Radiotherapy
Radiation therapy is one of the most frequently used methods for treating cancer patients. Therefore improving the quality of the treatment by using new irradiation technologies is one of the radiotherapist's constant concerns. The use of accelerators for delivering protons, heavier charged particles and secondary beams such as neutrons brings further improvement in dose distribution and in int...
متن کاملCyclotrons for Isotope Production
Cyclotrons continue to be efficient accelerators for radio-isotope production. In recent years, developments in the accelerator technology have greatly increased the practical beam current in these machines while also improving the overall system reliability. These developments combined with the development of new isotopes for medicine and industry, and a retiring of older machines indicates a ...
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ژورنال
عنوان ژورنال: Nature
سال: 1961
ISSN: 0028-0836,1476-4687
DOI: 10.1038/191532a0